General

  • Target

    8eca49abef15be71ee62bed0a7c956029e411574bb416c1bcae2217b4b986308

  • Size

    228KB

  • Sample

    221221-z8l46sdd36

  • MD5

    e2e59a95bff1cf56c26bdd4a0b6aa03b

  • SHA1

    6e7496c9bb06881c7a3db0efb53cea04215573d4

  • SHA256

    8eca49abef15be71ee62bed0a7c956029e411574bb416c1bcae2217b4b986308

  • SHA512

    8af0344840f4b6c1e0070a511c9f8152845d3523821c168e5cdc2549dd880b1850274ca96acac77e90eed13cb14425993af0a71cca21b3b5031025a8741a7813

  • SSDEEP

    3072:RsjgUL7F7m5s6t+UtPKjZ382PX5FrtLW4P84n01dm4ufcNQK1+eJV5u43:u1L7Fh6NtuZ3dbtW85sufeRu4

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      8eca49abef15be71ee62bed0a7c956029e411574bb416c1bcae2217b4b986308

    • Size

      228KB

    • MD5

      e2e59a95bff1cf56c26bdd4a0b6aa03b

    • SHA1

      6e7496c9bb06881c7a3db0efb53cea04215573d4

    • SHA256

      8eca49abef15be71ee62bed0a7c956029e411574bb416c1bcae2217b4b986308

    • SHA512

      8af0344840f4b6c1e0070a511c9f8152845d3523821c168e5cdc2549dd880b1850274ca96acac77e90eed13cb14425993af0a71cca21b3b5031025a8741a7813

    • SSDEEP

      3072:RsjgUL7F7m5s6t+UtPKjZ382PX5FrtLW4P84n01dm4ufcNQK1+eJV5u43:u1L7Fh6NtuZ3dbtW85sufeRu4

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks